<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=2">
<meta name="theme-color" content="#222">
<meta name="generator" content="Hexo 4.2.0">
  <link rel="apple-touch-icon" sizes="180x180" href="/myblogs/images/apple-touch-icon-next.png">
  <link rel="icon" type="image/png" sizes="32x32" href="/myblogs/images/favicon-32x32-next.png">
  <link rel="icon" type="image/png" sizes="16x16" href="/myblogs/images/favicon-16x16-next.png">
  <link rel="mask-icon" href="/myblogs/images/logo.svg" color="#222">

<link rel="stylesheet" href="/myblogs/css/main.css">


<link rel="stylesheet" href="/myblogs/lib/font-awesome/css/font-awesome.min.css">
  <link rel="stylesheet" href="/myblogs/lib/pace/pace-theme-minimal.min.css">
  <script src="/myblogs/lib/pace/pace.min.js"></script>


<script id="hexo-configurations">
  var NexT = window.NexT || {};
  var CONFIG = {
    hostname: new URL('http://hackmgod.gitee.io').hostname,
    root: '/myblogs/',
    scheme: 'Gemini',
    version: '7.7.0',
    exturl: false,
    sidebar: {"position":"left","display":"post","padding":18,"offset":12,"onmobile":false},
    copycode: {"enable":false,"show_result":false,"style":null},
    back2top: {"enable":true,"sidebar":false,"scrollpercent":false},
    bookmark: {"enable":false,"color":"#222","save":"auto"},
    fancybox: false,
    mediumzoom: false,
    lazyload: false,
    pangu: false,
    comments: {"style":"tabs","active":null,"storage":true,"lazyload":false,"nav":null},
    algolia: {
      appID: '',
      apiKey: '',
      indexName: '',
      hits: {"per_page":10},
      labels: {"input_placeholder":"Search for Posts","hits_empty":"We didn't find any results for the search: ${query}","hits_stats":"${hits} results found in ${time} ms"}
    },
    localsearch: {"enable":true,"trigger":"auto","top_n_per_article":1,"unescape":false,"preload":false},
    path: 'search.xml',
    motion: {"enable":true,"async":false,"transition":{"post_block":"fadeIn","post_header":"slideDownIn","post_body":"slideDownIn","coll_header":"slideLeftIn","sidebar":"slideUpIn"}}
  };
</script>

  <meta name="description" content="备忘录模式（详解版）">
<meta property="og:type" content="article">
<meta property="og:title" content="【35】备忘录模式（详解版）">
<meta property="og:url" content="http://hackmgod.gitee.io/2020/01/17/%E3%80%9035%E3%80%91%E5%A4%87%E5%BF%98%E5%BD%95%E6%A8%A1%E5%BC%8F%EF%BC%88%E8%AF%A6%E8%A7%A3%E7%89%88%EF%BC%89/index.html">
<meta property="og:site_name" content="H.m博客">
<meta property="og:description" content="备忘录模式（详解版）">
<meta property="og:locale" content="zh_CN">
<meta property="og:image" content="http://c.biancheng.net/uploads/allimg/181119/3-1Q119130413927.gif">
<meta property="og:image" content="http://c.biancheng.net/uploads/allimg/181119/3-1Q119130439230.gif">
<meta property="og:image" content="http://c.biancheng.net/uploads/allimg/181119/3-1Q119130526391.jpg">
<meta property="og:image" content="http://c.biancheng.net/uploads/allimg/181119/3-1Q119130HW56.gif">
<meta property="article:published_time" content="2020-01-17T05:59:17.000Z">
<meta property="article:modified_time" content="2020-01-17T10:09:39.365Z">
<meta property="article:author" content="H.m">
<meta name="twitter:card" content="summary">
<meta name="twitter:image" content="http://c.biancheng.net/uploads/allimg/181119/3-1Q119130413927.gif">

<link rel="canonical" href="http://hackmgod.gitee.io/2020/01/17/%E3%80%9035%E3%80%91%E5%A4%87%E5%BF%98%E5%BD%95%E6%A8%A1%E5%BC%8F%EF%BC%88%E8%AF%A6%E8%A7%A3%E7%89%88%EF%BC%89/">


<script id="page-configurations">
  // https://hexo.io/docs/variables.html
  CONFIG.page = {
    sidebar: "",
    isHome: false,
    isPost: true
  };
</script>

  <title>【35】备忘录模式（详解版） | H.m博客</title>
  






  <noscript>
  <style>
  .use-motion .brand,
  .use-motion .menu-item,
  .sidebar-inner,
  .use-motion .post-block,
  .use-motion .pagination,
  .use-motion .comments,
  .use-motion .post-header,
  .use-motion .post-body,
  .use-motion .collection-header { opacity: initial; }

  .use-motion .site-title,
  .use-motion .site-subtitle {
    opacity: initial;
    top: initial;
  }

  .use-motion .logo-line-before i { left: initial; }
  .use-motion .logo-line-after i { right: initial; }
  </style>
</noscript>

<link rel="alternate" href="/myblogs/atom.xml" title="H.m博客" type="application/atom+xml">
</head>

<body itemscope itemtype="http://schema.org/WebPage">
  <div class="container use-motion">
    <div class="headband"></div>

    <header class="header" itemscope itemtype="http://schema.org/WPHeader">
      <div class="header-inner"><div class="site-brand-container">
  <div class="site-meta">

    <div>
      <a href="/myblogs/" class="brand" rel="start">
        <span class="logo-line-before"><i></i></span>
        <span class="site-title">H.m博客</span>
        <span class="logo-line-after"><i></i></span>
      </a>
    </div>
        <p class="site-subtitle">www.hackm.cn</p>
  </div>

  <div class="site-nav-toggle">
    <div class="toggle" aria-label="切换导航栏">
      <span class="toggle-line toggle-line-first"></span>
      <span class="toggle-line toggle-line-middle"></span>
      <span class="toggle-line toggle-line-last"></span>
    </div>
  </div>
</div>


<nav class="site-nav">
  
  <ul id="menu" class="menu">
        <li class="menu-item menu-item-home">

    <a href="/myblogs/" rel="section"><i class="fa fa-fw fa-home"></i>首页</a>

  </li>
        <li class="menu-item menu-item-categories">

    <a href="/myblogs/categories/" rel="section"><i class="fa fa-fw fa-th"></i>分类</a>

  </li>
        <li class="menu-item menu-item-archives">

    <a href="/myblogs/archives/" rel="section"><i class="fa fa-fw fa-archive"></i>归档</a>

  </li>
      <li class="menu-item menu-item-search">
        <a role="button" class="popup-trigger"><i class="fa fa-search fa-fw"></i>搜索
        </a>
      </li>
  </ul>

</nav>
  <div class="site-search">
    <div class="popup search-popup">
    <div class="search-header">
  <span class="search-icon">
    <i class="fa fa-search"></i>
  </span>
  <div class="search-input-container">
    <input autocomplete="off" autocorrect="off" autocapitalize="none"
           placeholder="搜索..." spellcheck="false"
           type="text" id="search-input">
  </div>
  <span class="popup-btn-close">
    <i class="fa fa-times-circle"></i>
  </span>
</div>
<div id="search-result"></div>

</div>
<div class="search-pop-overlay"></div>

  </div>
</div>
    </header>

    
  <div class="back-to-top">
    <i class="fa fa-arrow-up"></i>
    <span>0%</span>
  </div>


    <main class="main">
      <div class="main-inner">
        <div class="content-wrap">
          

          <div class="content">
            

  <div class="posts-expand">
      
  
  
  <article itemscope itemtype="http://schema.org/Article" class="post-block " lang="zh-CN">
    <link itemprop="mainEntityOfPage" href="http://hackmgod.gitee.io/2020/01/17/%E3%80%9035%E3%80%91%E5%A4%87%E5%BF%98%E5%BD%95%E6%A8%A1%E5%BC%8F%EF%BC%88%E8%AF%A6%E8%A7%A3%E7%89%88%EF%BC%89/">

    <span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
      <meta itemprop="image" content="http://img.hao661.com/zt.hao661.com/uploads/allimg/141006/0644042451-0.jpg">
      <meta itemprop="name" content="H.m">
      <meta itemprop="description" content="欢迎您的到来！">
    </span>

    <span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
      <meta itemprop="name" content="H.m博客">
    </span>
      <header class="post-header">
		
        <h1 class="post-title" itemprop="name headline">
          【35】备忘录模式（详解版）
        </h1>

        <div class="post-meta">
            <span class="post-meta-item">
              <span class="post-meta-item-icon">
                <i class="fa fa-calendar-o"></i>
              </span>
              <span class="post-meta-item-text">发表于</span>
              

              <time title="创建时间：2020-01-17 13:59:17 / 修改时间：18:09:39" itemprop="dateCreated datePublished" datetime="2020-01-17T13:59:17+08:00">2020-01-17</time>
            </span>
            <span class="post-meta-item">
              <span class="post-meta-item-icon">
                <i class="fa fa-folder-o"></i>
              </span>
              <span class="post-meta-item-text">分类于</span>
                <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
                  <a href="/myblogs/categories/%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F/" itemprop="url" rel="index">
                    <span itemprop="name">设计模式</span>
                  </a>
                </span>
            </span>

          
            <div class="post-description">备忘录模式（详解版）</div>

        </div>
      </header>

    
    
    
    <div class="post-body" itemprop="articleBody">

      
        <h2 id="【35】备忘录模式（详解版）"><a href="#【35】备忘录模式（详解版）" class="headerlink" title="【35】备忘录模式（详解版）"></a>【35】备忘录模式（详解版）</h2><p>每个人都有犯错误的时候，都希望有种“后悔药”能弥补自己的过失，让自己重新开始，但现实是残酷的。在计算机应用中，客户同样会常常犯错误，能否提供“后悔药”给他们呢？当然是可以的，而且是有必要的。这个功能由“备忘录模式”来实现。</p>
<p>其实很多应用软件都提供了这项功能，如 Word、记事本、Photoshop、Eclipse 等软件在编辑时按 Ctrl+Z 组合键时能撤销当前操作，使文档恢复到之前的状态；还有在 IE 中的后退键、数据库事务管理中的回滚操作、玩游戏时的中间结果存档功能、数据库与操作系统的备份操作、棋类游戏中的悔棋功能等都属于这类。</p>
<p>备忘录模式能记录一个对象的内部状态，当用户后悔时能撤销当前操作，使数据恢复到它原先的状态。</p>
<h2 id="模式的定义与特点"><a href="#模式的定义与特点" class="headerlink" title="模式的定义与特点"></a>模式的定义与特点</h2><p>备忘录（Memento）模式的定义：在不破坏封装性的前提下，捕获一个对象的内部状态，并在该对象之外保存这个状态，以便以后当需要时能将该对象恢复到原先保存的状态。该模式又叫快照模式。</p>
<p>备忘录模式是一种对象行为型模式，其主要优点如下。</p>
<ol>
<li>提供了一种可以恢复状态的机制。当用户需要时能够比较方便地将数据恢复到某个历史的状态。</li>
<li>实现了内部状态的封装。除了创建它的发起人之外，其他对象都不能够访问这些状态信息。</li>
<li>简化了发起人类。发起人不需要管理和保存其内部状态的各个备份，所有状态信息都保存在备忘录中，并由管理者进行管理，这符合单一职责原则。</li>
</ol>
<p>其主要缺点是：资源消耗大。如果要保存的内部状态信息过多或者特别频繁，将会占用比较大的内存资源。</p>
<h2 id="模式的结构与实现"><a href="#模式的结构与实现" class="headerlink" title="模式的结构与实现"></a>模式的结构与实现</h2><p>备忘录模式的核心是设计备忘录类以及用于管理备忘录的管理者类，现在我们来学习其结构与实现。</p>
<h4 id="1-模式的结构"><a href="#1-模式的结构" class="headerlink" title="1. 模式的结构"></a>1. 模式的结构</h4><p>备忘录模式的主要角色如下。</p>
<ol>
<li>发起人（Originator）角色：记录当前时刻的内部状态信息，提供创建备忘录和恢复备忘录数据的功能，实现其他业务功能，它可以访问备忘录里的所有信息。</li>
<li>备忘录（Memento）角色：负责存储发起人的内部状态，在需要的时候提供这些内部状态给发起人。</li>
<li>管理者（Caretaker）角色：对备忘录进行管理，提供保存与获取备忘录的功能，但其不能对备忘录的内容进行访问与修改。</li>
</ol>
<p>备忘录模式的结构图如图 1 所示。</p>
<p><img src="http://c.biancheng.net/uploads/allimg/181119/3-1Q119130413927.gif" alt="备忘录模式的结构图"><br>图1 备忘录模式的结构图</p>
<h4 id="2-模式的实现"><a href="#2-模式的实现" class="headerlink" title="2. 模式的实现"></a>2. 模式的实现</h4><p>备忘录模式的实现代码如下：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br></pre></td><td class="code"><pre><span class="line">package memento;</span><br><span class="line">public class MementoPattern</span><br><span class="line">&#123;</span><br><span class="line">    public static void main(String[] args)</span><br><span class="line">    &#123;</span><br><span class="line">        Originator or&#x3D;new Originator();</span><br><span class="line">        Caretaker cr&#x3D;new Caretaker();       </span><br><span class="line">        or.setState(&quot;S0&quot;); </span><br><span class="line">        System.out.println(&quot;初始状态:&quot;+or.getState());           </span><br><span class="line">        cr.setMemento(or.createMemento()); &#x2F;&#x2F;保存状态      </span><br><span class="line">        or.setState(&quot;S1&quot;); </span><br><span class="line">        System.out.println(&quot;新的状态:&quot;+or.getState());        </span><br><span class="line">        or.restoreMemento(cr.getMemento()); &#x2F;&#x2F;恢复状态</span><br><span class="line">        System.out.println(&quot;恢复状态:&quot;+or.getState());</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line">&#x2F;&#x2F;备忘录</span><br><span class="line">class Memento</span><br><span class="line">&#123; </span><br><span class="line">    private String state; </span><br><span class="line">    public Memento(String state)</span><br><span class="line">    &#123; </span><br><span class="line">        this.state&#x3D;state; </span><br><span class="line">    &#125;     </span><br><span class="line">    public void setState(String state)</span><br><span class="line">    &#123; </span><br><span class="line">        this.state&#x3D;state; </span><br><span class="line">    &#125;</span><br><span class="line">    public String getState()</span><br><span class="line">    &#123; </span><br><span class="line">        return state; </span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line">&#x2F;&#x2F;发起人</span><br><span class="line">class Originator</span><br><span class="line">&#123; </span><br><span class="line">    private String state;     </span><br><span class="line">    public void setState(String state)</span><br><span class="line">    &#123; </span><br><span class="line">        this.state&#x3D;state; </span><br><span class="line">    &#125;</span><br><span class="line">    public String getState()</span><br><span class="line">    &#123; </span><br><span class="line">        return state; </span><br><span class="line">    &#125;</span><br><span class="line">    public Memento createMemento()</span><br><span class="line">    &#123; </span><br><span class="line">        return new Memento(state); </span><br><span class="line">    &#125; </span><br><span class="line">    public void restoreMemento(Memento m)</span><br><span class="line">    &#123; </span><br><span class="line">        this.setState(m.getState()); </span><br><span class="line">    &#125; </span><br><span class="line">&#125;</span><br><span class="line">&#x2F;&#x2F;管理者</span><br><span class="line">class Caretaker</span><br><span class="line">&#123; </span><br><span class="line">    private Memento memento;       </span><br><span class="line">    public void setMemento(Memento m)</span><br><span class="line">    &#123; </span><br><span class="line">        memento&#x3D;m; </span><br><span class="line">    &#125;</span><br><span class="line">    public Memento getMemento()</span><br><span class="line">    &#123; </span><br><span class="line">        return memento; </span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>


<p>程序运行的结果如下：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">初始状态:S0</span><br><span class="line">新的状态:S1</span><br><span class="line">恢复状态:S0</span><br></pre></td></tr></table></figure>

<h2 id="模式的应用实例"><a href="#模式的应用实例" class="headerlink" title="模式的应用实例"></a>模式的应用实例</h2><p>【例1】利用备忘录模式设计相亲游戏。</p>
<p>分析：假如有西施、王昭君、貂蝉、杨玉环四大美女同你相亲，你可以选择其中一位作为你的爱人；当然，如果你对前面的选择不满意，还可以重新选择，但希望你不要太花心；这个游戏提供后悔功能，用“备忘录模式”设计比较合适（点此下载所要显示的四大美女的图片）。</p>
<p>首先，先设计一个美女（Girl）类，它是备忘录角色，提供了获取和存储美女信息的功能；然后，设计一个相亲者（You）类，它是发起人角色，它记录当 前时刻的内部状态信息（临时妻子的姓名），并提供创建备忘录和恢复备忘录数据的功能；最后，定义一个美女栈（GirlStack）类，它是管理者角色，负责对备忘录进行管理，用于保存相亲者（You）前面选过的美女信息，不过最多只能保存 4 个，提供后悔功能。</p>
<p>客户类设计成窗体程序，它包含美女栈（GirlStack）对象和相亲者（You）对象，它实现了 ActionListener 接口的事件处理方法 actionPerformed(ActionEvent e)，并将 4 大美女图像和相亲者（You）选择的美女图像在窗体中显示出来。图 2 所示是其结构图。</p>
<p><img src="http://c.biancheng.net/uploads/allimg/181119/3-1Q119130439230.gif" alt="相亲游戏的结构图"><br>图2 相亲游戏的结构图</p>
<p>程序代码如下：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br><span class="line">143</span><br><span class="line">144</span><br><span class="line">145</span><br><span class="line">146</span><br><span class="line">147</span><br><span class="line">148</span><br><span class="line">149</span><br><span class="line">150</span><br><span class="line">151</span><br><span class="line">152</span><br><span class="line">153</span><br><span class="line">154</span><br><span class="line">155</span><br><span class="line">156</span><br><span class="line">157</span><br><span class="line">158</span><br><span class="line">159</span><br><span class="line">160</span><br><span class="line">161</span><br><span class="line">162</span><br><span class="line">163</span><br><span class="line">164</span><br><span class="line">165</span><br><span class="line">166</span><br><span class="line">167</span><br><span class="line">168</span><br><span class="line">169</span><br><span class="line">170</span><br><span class="line">171</span><br><span class="line">172</span><br><span class="line">173</span><br><span class="line">174</span><br><span class="line">175</span><br><span class="line">176</span><br><span class="line">177</span><br><span class="line">178</span><br><span class="line">179</span><br><span class="line">180</span><br><span class="line">181</span><br></pre></td><td class="code"><pre><span class="line">package memento;</span><br><span class="line">import java.awt.GridLayout;</span><br><span class="line">import java.awt.event.*;</span><br><span class="line">import javax.swing.*;</span><br><span class="line">public class DatingGame</span><br><span class="line">&#123;</span><br><span class="line">    public static void main(String[] args)</span><br><span class="line">    &#123;</span><br><span class="line">        new DatingGameWin();</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line">&#x2F;&#x2F;客户窗体类</span><br><span class="line">class DatingGameWin extends JFrame implements ActionListener</span><br><span class="line">&#123;</span><br><span class="line">    private static final long serialVersionUID&#x3D;1L;   </span><br><span class="line">    JPanel CenterJP,EastJP;</span><br><span class="line">    JRadioButton girl1,girl2,girl3,girl4;</span><br><span class="line">    JButton button1,button2;</span><br><span class="line">    String FileName;</span><br><span class="line">    JLabel g;</span><br><span class="line">    You you;</span><br><span class="line">    GirlStack girls;</span><br><span class="line">    DatingGameWin()</span><br><span class="line">    &#123;</span><br><span class="line">        super(&quot;利用备忘录模式设计相亲游戏&quot;);</span><br><span class="line">        you&#x3D;new You();</span><br><span class="line">        girls&#x3D;new GirlStack();       </span><br><span class="line">        this.setBounds(0,0,900,380);            </span><br><span class="line">        this.setResizable(false);</span><br><span class="line">        FileName&#x3D;&quot;src&#x2F;memento&#x2F;Photo&#x2F;四大美女.jpg&quot;;   </span><br><span class="line">        g&#x3D;new JLabel(new ImageIcon(FileName),JLabel.CENTER);</span><br><span class="line">        CenterJP&#x3D;new JPanel();</span><br><span class="line">        CenterJP.setLayout(new GridLayout(1,4));</span><br><span class="line">        CenterJP.setBorder(BorderFactory.createTitledBorder(&quot;四大美女如下：&quot;));</span><br><span class="line">        CenterJP.add(g);   </span><br><span class="line">        this.add(&quot;Center&quot;,CenterJP);</span><br><span class="line">        EastJP&#x3D;new JPanel();</span><br><span class="line">        EastJP.setLayout(new GridLayout(1,1));</span><br><span class="line">        EastJP.setBorder(BorderFactory.createTitledBorder(&quot;您选择的爱人是：&quot;));</span><br><span class="line">        this.add(&quot;East&quot;,EastJP);</span><br><span class="line">        JPanel SouthJP&#x3D;new JPanel();      </span><br><span class="line">        JLabel info&#x3D;new JLabel(&quot;四大美女有“沉鱼落雁之容、闭月羞花之貌”，您选择谁？&quot;);</span><br><span class="line">        girl1&#x3D;new JRadioButton(&quot;西施&quot;,true);</span><br><span class="line">        girl2&#x3D;new JRadioButton(&quot;貂蝉&quot;);</span><br><span class="line">        girl3&#x3D;new JRadioButton(&quot;王昭君&quot;);       </span><br><span class="line">        girl4&#x3D;new JRadioButton(&quot;杨玉环&quot;);</span><br><span class="line">        button1&#x3D;new JButton(&quot;确定&quot;);</span><br><span class="line">        button2&#x3D;new JButton(&quot;返回&quot;);</span><br><span class="line">        ButtonGroup group&#x3D;new ButtonGroup();</span><br><span class="line">        group.add(girl1);</span><br><span class="line">        group.add(girl2);</span><br><span class="line">        group.add(girl3);</span><br><span class="line">        group.add(girl4);</span><br><span class="line">        SouthJP.add(info);</span><br><span class="line">        SouthJP.add(girl1);</span><br><span class="line">        SouthJP.add(girl2);</span><br><span class="line">        SouthJP.add(girl3);</span><br><span class="line">        SouthJP.add(girl4);</span><br><span class="line">        SouthJP.add(button1);</span><br><span class="line">        SouthJP.add(button2);</span><br><span class="line">        button1.addActionListener(this);</span><br><span class="line">        button2.addActionListener(this);</span><br><span class="line">        this.add(&quot;South&quot;,SouthJP);        </span><br><span class="line">        showPicture(&quot;空白&quot;);</span><br><span class="line">        you.setWife(&quot;空白&quot;);</span><br><span class="line">        girls.push(you.createMemento());    &#x2F;&#x2F;保存状态</span><br><span class="line">    &#125;</span><br><span class="line">    &#x2F;&#x2F;显示图片</span><br><span class="line">    void showPicture(String name)</span><br><span class="line">    &#123;</span><br><span class="line">        EastJP.removeAll(); &#x2F;&#x2F;清除面板内容</span><br><span class="line">        EastJP.repaint(); &#x2F;&#x2F;刷新屏幕</span><br><span class="line">        you.setWife(name);        </span><br><span class="line">        FileName&#x3D;&quot;src&#x2F;memento&#x2F;Photo&#x2F;&quot;+name+&quot;.jpg&quot;;               </span><br><span class="line">        g&#x3D;new JLabel(new ImageIcon(FileName),JLabel.CENTER);                   </span><br><span class="line">        EastJP.add(g);</span><br><span class="line">        this.setVisible(true);</span><br><span class="line">        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);            </span><br><span class="line">    &#125;</span><br><span class="line">    @Override</span><br><span class="line">    public void actionPerformed(ActionEvent e)</span><br><span class="line">    &#123;</span><br><span class="line">        boolean ok&#x3D;false;</span><br><span class="line">        if(e.getSource()&#x3D;&#x3D;button1)</span><br><span class="line">        &#123;</span><br><span class="line">            ok&#x3D;girls.push(you.createMemento());    &#x2F;&#x2F;保存状态  </span><br><span class="line">            if(ok &amp;&amp; girl1.isSelected())</span><br><span class="line">            &#123;</span><br><span class="line">                showPicture(&quot;西施&quot;);</span><br><span class="line">            &#125;</span><br><span class="line">            else if(ok &amp;&amp; girl2.isSelected())</span><br><span class="line">            &#123;</span><br><span class="line">                showPicture(&quot;貂蝉&quot;);</span><br><span class="line">            &#125;</span><br><span class="line">            else if(ok &amp;&amp; girl3.isSelected())</span><br><span class="line">            &#123;</span><br><span class="line">                showPicture(&quot;王昭君&quot;);</span><br><span class="line">            &#125;</span><br><span class="line">            else if(ok &amp;&amp; girl4.isSelected())</span><br><span class="line">            &#123;</span><br><span class="line">                showPicture(&quot;杨玉环&quot;);</span><br><span class="line">            &#125;               </span><br><span class="line">        &#125;</span><br><span class="line">        else if(e.getSource()&#x3D;&#x3D;button2)</span><br><span class="line">        &#123;</span><br><span class="line">            you.restoreMemento(girls.pop()); &#x2F;&#x2F;恢复状态</span><br><span class="line">            showPicture(you.getWife());</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line">&#x2F;&#x2F;备忘录：美女</span><br><span class="line">class Girl</span><br><span class="line">&#123; </span><br><span class="line">  private String name;</span><br><span class="line">  public Girl(String name)</span><br><span class="line">  &#123; </span><br><span class="line">      this.name&#x3D;name; </span><br><span class="line">  &#125;     </span><br><span class="line">  public void setName(String name)</span><br><span class="line">  &#123; </span><br><span class="line">      this.name&#x3D;name; </span><br><span class="line">  &#125;</span><br><span class="line">  public String getName()</span><br><span class="line">  &#123; </span><br><span class="line">      return name; </span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line">&#x2F;&#x2F;发起人：您</span><br><span class="line">class You</span><br><span class="line">&#123; </span><br><span class="line">    private String wifeName;    &#x2F;&#x2F;妻子</span><br><span class="line">    public void setWife(String name)</span><br><span class="line">    &#123; </span><br><span class="line">        wifeName&#x3D;name; </span><br><span class="line">    &#125;</span><br><span class="line">    public String getWife()</span><br><span class="line">    &#123; </span><br><span class="line">        return wifeName; </span><br><span class="line">    &#125;</span><br><span class="line">    public Girl createMemento()</span><br><span class="line">    &#123; </span><br><span class="line">        return new Girl(wifeName); </span><br><span class="line">    &#125;</span><br><span class="line">    public void restoreMemento(Girl p)</span><br><span class="line">    &#123; </span><br><span class="line">        setWife(p.getName());</span><br><span class="line">    &#125; </span><br><span class="line">&#125;</span><br><span class="line">&#x2F;&#x2F;管理者：美女栈</span><br><span class="line">class GirlStack</span><br><span class="line">&#123; </span><br><span class="line">    private Girl girl[];</span><br><span class="line">    private int top;</span><br><span class="line">    GirlStack()</span><br><span class="line">    &#123;</span><br><span class="line">        girl&#x3D;new Girl[5];</span><br><span class="line">        top&#x3D;-1;</span><br><span class="line">    &#125;</span><br><span class="line">    public boolean push(Girl p)</span><br><span class="line">    &#123;</span><br><span class="line">        if(top&gt;&#x3D;4)</span><br><span class="line">        &#123;</span><br><span class="line">            System.out.println(&quot;你太花心了，变来变去的！&quot;);</span><br><span class="line">            return false;</span><br><span class="line">        &#125;</span><br><span class="line">        else</span><br><span class="line">        &#123;</span><br><span class="line">            girl[++top]&#x3D;p;</span><br><span class="line">            return true;</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line">    public Girl pop()</span><br><span class="line">    &#123;</span><br><span class="line">        if(top&lt;&#x3D;0)</span><br><span class="line">        &#123;</span><br><span class="line">            System.out.println(&quot;美女栈空了！&quot;);</span><br><span class="line">            return girl[0];</span><br><span class="line">        &#125;</span><br><span class="line">        else return girl[top--]; </span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>


<p>程序运行结果如图 3 所示。</p>
<p><img src="http://c.biancheng.net/uploads/allimg/181119/3-1Q119130526391.jpg" alt="相亲游戏的运行结果"><br>图3 相亲游戏的运行结果（点此查看原图）</p>
<h2 id="模式的应用场景"><a href="#模式的应用场景" class="headerlink" title="模式的应用场景"></a>模式的应用场景</h2><p>前面学习了备忘录模式的定义与特点、结构与实现，现在来看该模式的以下应用场景。</p>
<ul>
<li>需要保存与恢复数据的场景，如玩游戏时的中间结果的存档功能。</li>
<li>需要提供一个可回滚操作的场景，如 Word、记事本、Photoshop，Eclipse 等软件在编辑时按 Ctrl+Z 组合键，还有数据库中事务操作。<h2 id="模式的扩展"><a href="#模式的扩展" class="headerlink" title="模式的扩展"></a>模式的扩展</h2>在前面介绍的备忘录模式中，有单状态备份的例子，也有多状态备份的例子。下面介绍备忘录模式如何同原型模式混合使用。在备忘录模式中，通过定义“备忘录”来备份“发起人”的信息，而原型模式的 clone() 方法具有自备份功能，所以，如果让发起人实现 Cloneable 接口就有备份自己的功能，这时可以删除备忘录类，其结构图如图 4 所示。</li>
</ul>
<p><img src="http://c.biancheng.net/uploads/allimg/181119/3-1Q119130HW56.gif" alt="带原型的备忘录模式的结构图"><br>图4 带原型的备忘录模式的结构图</p>
<p>实现代码如下：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br></pre></td><td class="code"><pre><span class="line">package memento;</span><br><span class="line">public class PrototypeMemento</span><br><span class="line">&#123;</span><br><span class="line">    public static void main(String[] args)</span><br><span class="line">    &#123;</span><br><span class="line">        OriginatorPrototype or&#x3D;new OriginatorPrototype();</span><br><span class="line">        PrototypeCaretaker cr&#x3D;new PrototypeCaretaker();       </span><br><span class="line">        or.setState(&quot;S0&quot;); </span><br><span class="line">        System.out.println(&quot;初始状态:&quot;+or.getState());           </span><br><span class="line">        cr.setMemento(or.createMemento()); &#x2F;&#x2F;保存状态      </span><br><span class="line">        or.setState(&quot;S1&quot;); </span><br><span class="line">        System.out.println(&quot;新的状态:&quot;+or.getState());        </span><br><span class="line">        or.restoreMemento(cr.getMemento()); &#x2F;&#x2F;恢复状态</span><br><span class="line">        System.out.println(&quot;恢复状态:&quot;+or.getState());</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line">&#x2F;&#x2F;发起人原型</span><br><span class="line">class OriginatorPrototype  implements Cloneable</span><br><span class="line">&#123; </span><br><span class="line">    private String state;     </span><br><span class="line">    public void setState(String state)</span><br><span class="line">    &#123; </span><br><span class="line">        this.state&#x3D;state; </span><br><span class="line">    &#125;</span><br><span class="line">    public String getState()</span><br><span class="line">    &#123; </span><br><span class="line">        return state; </span><br><span class="line">    &#125;</span><br><span class="line">    public OriginatorPrototype createMemento()</span><br><span class="line">    &#123; </span><br><span class="line">        return this.clone(); </span><br><span class="line">    &#125; </span><br><span class="line">    public void restoreMemento(OriginatorPrototype opt)</span><br><span class="line">    &#123; </span><br><span class="line">        this.setState(opt.getState()); </span><br><span class="line">    &#125;</span><br><span class="line">    public OriginatorPrototype clone()</span><br><span class="line">    &#123;</span><br><span class="line">        try</span><br><span class="line">        &#123;</span><br><span class="line">            return (OriginatorPrototype) super.clone();</span><br><span class="line">        &#125;</span><br><span class="line">        catch(CloneNotSupportedException e)</span><br><span class="line">        &#123;</span><br><span class="line">            e.printStackTrace();</span><br><span class="line">        &#125;</span><br><span class="line">        return null;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line">&#x2F;&#x2F;原型管理者</span><br><span class="line">class PrototypeCaretaker</span><br><span class="line">&#123; </span><br><span class="line">    private OriginatorPrototype opt;       </span><br><span class="line">    public void setMemento(OriginatorPrototype opt)</span><br><span class="line">    &#123; </span><br><span class="line">        this.opt&#x3D;opt; </span><br><span class="line">    &#125;</span><br><span class="line">    public OriginatorPrototype getMemento()</span><br><span class="line">    &#123; </span><br><span class="line">        return opt; </span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>


<p>程序的运行结果如下：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">初始状态:S0</span><br><span class="line">新的状态:S1</span><br><span class="line">恢复状态:S0</span><br></pre></td></tr></table></figure>
    </div>

    
    
    

      <footer class="post-footer">

        


        
    <div class="post-nav">
      <div class="post-nav-item">
    <a href="/myblogs/2020/01/17/%E3%80%9038%E3%80%91%E5%88%9B%E5%BB%BA%E5%9E%8B%E6%A8%A1%E5%BC%8F%E5%BA%94%E7%94%A8%E5%AE%9E%E9%AA%8C/" rel="prev" title="【38】创建型模式应用实验">
      <i class="fa fa-chevron-left"></i> 【38】创建型模式应用实验
    </a></div>
      <div class="post-nav-item">
    <a href="/myblogs/2020/01/17/%E3%80%9034%E3%80%91%E8%AE%BF%E9%97%AE%E8%80%85%E6%A8%A1%E5%BC%8F%EF%BC%88Visitor%E6%A8%A1%E5%BC%8F%EF%BC%89%E8%AF%A6%E8%A7%A3/" rel="next" title="【34】访问者模式（Visitor模式）详解">
      【34】访问者模式（Visitor模式）详解 <i class="fa fa-chevron-right"></i>
    </a></div>
    </div>
      </footer>
    
  </article>
  
  
  

  </div>


          </div>
          

<script>
  window.addEventListener('tabs:register', () => {
    let activeClass = CONFIG.comments.activeClass;
    if (CONFIG.comments.storage) {
      activeClass = localStorage.getItem('comments_active') || activeClass;
    }
    if (activeClass) {
      let activeTab = document.querySelector(`a[href="#comment-${activeClass}"]`);
      if (activeTab) {
        activeTab.click();
      }
    }
  });
  if (CONFIG.comments.storage) {
    window.addEventListener('tabs:click', event => {
      if (!event.target.matches('.tabs-comment .tab-content .tab-pane')) return;
      let commentClass = event.target.classList[1];
      localStorage.setItem('comments_active', commentClass);
    });
  }
</script>

        </div>
          
  
  <div class="toggle sidebar-toggle">
    <span class="toggle-line toggle-line-first"></span>
    <span class="toggle-line toggle-line-middle"></span>
    <span class="toggle-line toggle-line-last"></span>
  </div>

  <aside class="sidebar">
    <div class="sidebar-inner">

      <ul class="sidebar-nav motion-element">
        <li class="sidebar-nav-toc">
          文章目录
        </li>
        <li class="sidebar-nav-overview">
          站点概览
        </li>
      </ul>

      <!--noindex-->
      <div class="post-toc-wrap sidebar-panel">
          <div class="post-toc motion-element"><ol class="nav"><li class="nav-item nav-level-2"><a class="nav-link" href="#【35】备忘录模式（详解版）"><span class="nav-number">1.</span> <span class="nav-text">【35】备忘录模式（详解版）</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#模式的定义与特点"><span class="nav-number">2.</span> <span class="nav-text">模式的定义与特点</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#模式的结构与实现"><span class="nav-number">3.</span> <span class="nav-text">模式的结构与实现</span></a><ol class="nav-child"><li class="nav-item nav-level-4"><a class="nav-link" href="#1-模式的结构"><span class="nav-number">3.0.1.</span> <span class="nav-text">1. 模式的结构</span></a></li><li class="nav-item nav-level-4"><a class="nav-link" href="#2-模式的实现"><span class="nav-number">3.0.2.</span> <span class="nav-text">2. 模式的实现</span></a></li></ol></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#模式的应用实例"><span class="nav-number">4.</span> <span class="nav-text">模式的应用实例</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#模式的应用场景"><span class="nav-number">5.</span> <span class="nav-text">模式的应用场景</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#模式的扩展"><span class="nav-number">6.</span> <span class="nav-text">模式的扩展</span></a></li></ol></div>
      </div>
      <!--/noindex-->

      <div class="site-overview-wrap sidebar-panel">
        <div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person">
    <img class="site-author-image" itemprop="image" alt="H.m"
      src="http://img.hao661.com/zt.hao661.com/uploads/allimg/141006/0644042451-0.jpg">
  <p class="site-author-name" itemprop="name">H.m</p>
  <div class="site-description" itemprop="description">欢迎您的到来！</div>
</div>
<div class="site-state-wrap motion-element">
  <nav class="site-state">
      <div class="site-state-item site-state-posts">
          <a href="/myblogs/archives/">
        
          <span class="site-state-item-count">42</span>
          <span class="site-state-item-name">日志</span>
        </a>
      </div>
      <div class="site-state-item site-state-categories">
            <a href="/myblogs/categories/">
          
        <span class="site-state-item-count">3</span>
        <span class="site-state-item-name">分类</span></a>
      </div>
  </nav>
</div>
  <div class="links-of-author motion-element">
      <span class="links-of-author-item">
        <a href="https://github.com/hackmgod" title="GitHub → https:&#x2F;&#x2F;github.com&#x2F;hackmgod" rel="noopener" target="_blank"><i class="fa fa-fw fa-github"></i>GitHub</a>
      </span>
      <span class="links-of-author-item">
        <a href="/myblogs/hackmgod@foxmail.com" title="E-Mail → hackmgod@foxmail.com"><i class="fa fa-fw fa-envelope"></i>E-Mail</a>
      </span>
      <span class="links-of-author-item">
        <a href="/myblogs/975643993@qq.com" title="QQ → 975643993@qq.com"><i class="fa fa-fw fa-qq"></i>QQ</a>
      </span>
      <span class="links-of-author-item">
        <a href="/myblogs/atom.xml" title="RSS → &#x2F;atom.xml"><i class="fa fa-fw fa-rss"></i>RSS</a>
      </span>
  </div>


  <div class="links-of-blogroll motion-element">
    <div class="links-of-blogroll-title">
      <i class="fa fa-fw fa-link"></i>
      友情链接
    </div>
    <ul class="links-of-blogroll-list">
        <li class="links-of-blogroll-item">
          <a href="https://www.baidu.com/" title="https:&#x2F;&#x2F;www.baidu.com&#x2F;" rel="noopener" target="_blank">百度</a>
        </li>
        <li class="links-of-blogroll-item">
          <a href="https://www.iqiyi.com/" title="https:&#x2F;&#x2F;www.iqiyi.com&#x2F;" rel="noopener" target="_blank">爱奇艺</a>
        </li>
    </ul>
  </div>

      </div>

    </div>
  </aside>
  <div id="sidebar-dimmer"></div>


      </div>
    </main>

    <footer class="footer">
      <div class="footer-inner">
        <!-- 用下面的符号注释，注释代码用下面括号括起来 -->
<!-- -->

<div class="copyright">
  
  &copy; 
  <span itemprop="copyrightYear">2020</span>
  <span class="with-love">
    <i class="fa fa-user"></i>
  </span>
  <span class="author" itemprop="copyrightHolder">H.m</span>
</div>


<!--
  <div class="powered-by">由 <a href="https://hexo.io/" class="theme-link" rel="noopener" target="_blank">Hexo</a> 强力驱动 v4.2.0
  </div>
  <span class="post-meta-divider">|</span>
  <div class="theme-info">主题 – <a href="https://theme-next.org/" class="theme-link" rel="noopener" target="_blank">NexT.Gemini</a> v7.7.0
  </div> -->

<script async src="//busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script>

<div class="powered-by">
  <i class="fa fa-user-md"></i>
  <span id="busuanzi_container_site_pv">
    本站访问量:<span id="busuanzi_value_site_pv"></span>次
  </span>
  <span class="post-meta-divider">|</span>
  <span id="busuanzi_container_site_uv">
    本站总访客量：<span id="busuanzi_value_site_uv"></span>人
  </span>
</div>





        








      </div>
    </footer>
  </div>

  
  <script src="/myblogs/lib/anime.min.js"></script>
  <script src="/myblogs/lib/velocity/velocity.min.js"></script>
  <script src="/myblogs/lib/velocity/velocity.ui.min.js"></script>

<script src="/myblogs/js/utils.js"></script>

<script src="/myblogs/js/motion.js"></script>


<script src="/myblogs/js/schemes/pisces.js"></script>


<script src="/myblogs/js/next-boot.js"></script>




  




  
<script src="/myblogs/js/local-search.js"></script>













  

  

</body>
</html>


<a href="https://github.com/hackmgod" target="_blank" rel="noopener" class="github-corner" aria-label="View source on GitHub"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#151513; color:#fff; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>


<!-- 动态背景 -->
<script type="text/javascript" src="//cdn.bootcss.com/canvas-nest.js/1.0.0/canvas-nest.min.js"></script>
<!-- 页面点击小红心 -->
<script type="text/javascript" src="/js/src/clicklove.js"></script>